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Published: 21/10/2020 Updated: 29/10/2020

CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10

CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9

VMScore: 445

Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N

BigBlueButton prior to 2.2.27 has an unsafe JODConverter setting in which LibreOffice document conversions can access external files.

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Proof of Concept of Libreoffice file exfiltration vulnerability in Big Blue Button

CVE-2020-27603-bbb-libreoffice-poc Proof of Concept of Libreoffice file exfiltration vulnerability in Big Blue Button These ODT files show how to exploit a file exfiltration vulnerability that can happen with server-side Libreoffice rendering, eg BigBlueButton Background: bloghboeckde/archives/902-File-Exfiltration-via-Libreoffice-in-BigBlueButton-and-JODConverter

NVD-CWE-noinfo https://www.golem.de/news/big-blue-button-das-grosse-blaue-sicherheitsrisiko-2010-151610.html https://nvd.nist.gov https://github.com/hannob/CVE-2020-27603-bbb-libreoffice-poc

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CVE-2020-27603

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